I started off with powered formula but then I tried a can of liquid forumla and you just add water for the same quantity of formula. It is so much easier and it works out cheaper overall as I use a can a day for 6 5oz feeds plus I don't have the problems with the powder not dissoloving properly.
Is that the litre cartons of pre-mixed formula? I've heard of them but not a can you mix with water. The pre-mix stuff is just to pour in the bottle, not add water to.
http://www.rosscanada.ca/products_e.shtml This is the brand I get, I got 12 cans in a box today, total came to $23 (so around 11.50 pounds) and will last me exactly 12 days and also I can leave them in the fridge for 48 hours. After messing around with powder for a few weeks liquid formula is a lot easier.
Sami, I am in Canada and don't think you get it there as I was just talking to my about it, am surprised though. Can get 30oz's out of 1 can, so 15oz's of formula and 15oz's of water.